We're here to help, so Kudo's for the both of you for willing to take action and accept fiscal responsibilities.
From what I've heard....it's better to send your requests to the CRA's on one page.
If you purchase your Fico Scores, there is a section that has printable content. I filled it all out, mailed it in and had great results.
Since I have had no collections, someone with experience will chime in here.
IMHO, if you have three medical collections with one CA, IF you write them a letter NEVER sign your name, only type it!!!!
Now, that being said, a score of 533....mine was WORSE. When I first began this journey in Nov. 07, one of my scores was 481. Three months later, it's gone up almost 100 points! If it takes holding your hand to get you there, we'll get there.